I've had the golden orb for a few months. It's a good cooler for the money, but whenever I push my CPU to over 945mhz I get random freeze on W2K.
So I got a brand new Alpha 35t, and right now my CPU running great at 980mhz. According to the temperature reading in the BIOS, it says 35C.
Ok...here's the real tip from my own experience.
Golden Orb
The socket on CUSL2 is a bit odd. It's actually larger than others, that I had to bend (spread out) both sides of the clip to fit it on. Other than that the installing the Orb was a piece of cake. Just make sure, you work the mechanizm a few times with your hands.
Alpha 35t
I had a hell of time with this s.o.b. The first problem I faced was with the clip. There's not enough room to work with. The resistors on CUSL2 are too close to the socket! Be very careful. If possible take off the memory modules to give yourself more room.
The second problem, this is one is a killer! Those 4 plastic feet are too thick! Because of them the CPU doesn come into contact with the heatsink. Solution? Make it thinner by lapping them on a sandpaper. First cover the copper portion of the heatsink for protection then lap it in nice circular motion. How much? Just enough so that the thermal compound on the CPU is stamped "evenly" on the heatsink.
Good Luck!